Tool Engagement Cueing for Force and Position Feedback
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Solution Overview
Problem
Workers frequently apply excessive force while using tools, leading to repetitive strain and cumulative trauma injuries due to unawareness of the minimum force required, resulting in pain and significant costs for employers.
Innovation Solution
A system and method that utilize engagement sensors and a processor to provide cueing signals to users when their force or position deviates from a preselected acceptable range, using alert devices to notify users of improper use and promote safer engagement with tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If workers apply more force to complete tasks, then task completion efficiency is improved, but the risk of repetitive strain and cumulative trauma injuries increases
Solution Approach 1:
The system continuously monitors applied force through pressure sensors and provides real-time feedback to the user via alert devices. When force exceeds the predetermined safe range, the system alerts the user to reduce force, enabling them to maintain productivity while avoiding injury-causing force levels.
Solution Approach 2:
The system establishes a predetermined safe force range parameter and dynamically adjusts or monitors force application within this parameter. By defining and enforcing force parameter boundaries, the system allows efficient task completion while preventing force levels that cause repetitive strain injuries.
2Loss of information
If workers are not aware of the minimum force required, then they may apply excessive force, but providing force feedback requires additional monitoring equipment
Solution Approach 1:
The system uses pressure sensors to monitor applied force and provides real-time feedback through alert devices (visual, auditory, or haptic). This feedback loop informs users of their force application level, enabling them to adjust and maintain force within the safe range without needing complex monitoring infrastructure.
Solution Approach 2:
The system replaces complex mechanical force measurement devices with electronic pressure sensors and digital feedback mechanisms. This substitution provides accurate force monitoring and user awareness while keeping the overall system relatively simple and easy to integrate into existing tools.
3Reliability
If engagement sensors and alert devices are added to the tool, then user awareness of proper force application is improved, but the tool complexity increases
Solution Approach 1:
The system integrates pressure sensors and alert devices to provide real-time feedback when force exceeds safe limits. This feedback mechanism improves reliability of safe force application by continuously monitoring and alerting users, while the modular design keeps added complexity manageable.
Solution Approach 2:
The alert device can provide multiple types of feedback (visual, auditory, haptic) through a single integrated component, reducing overall system complexity. The pressure sensor serves dual purposes of monitoring both magnitude and duration of force application, enhancing reliability while minimizing the number of separate components needed.
Data Source
AI summary
A method of providing cueing signals to a user of a tool. Engagement sensors are positioned, for obtaining engagement data regarding the user's engagement with the tool. The engagement data is compared to a preselected acceptable range of engagement data. If the engagement data is outside the preselected acceptable range of engagement data, then an alert signal is transmitted to an alert device. Upon receipt of the alert signal, the alert device generates a cueing alert signal to indicate that the engagement data is outside the preselected acceptable range.